CVE-2024-51298Network attack vector

Unauthenticated command execution via GRE tunnel handler

Published Oct 30, 2024 · Updated Mar 19, 2025

Command injection in DrayTek Vigor3900 1.5.1.3 allows remote attackers to execute arbitrary commands through the GRE tunnel interface. The doGRETunnel function in mainfunction.cgi accepts malicious commands from a request and forwards them for execution without neutralization. No authentication or user interaction is required, and successful exploitation grants command execution with the appliance process's privileges.

CVSS severity9.8
Critical
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in DrayTek Vigor3900 1.5.1.3 allows remote attackers to execute arbitrary commands through the GRE tunnel interface. The doGRETunnel function in mainfunction.cgi accepts malicious commands from a request and forwards them for execution without neutralization. No authentication or user interaction is required, and successful exploitation grants command execution with the appliance process's privileges.

The record

CVE
CVE-2024-51298
Published
Oct 30, 2024
Updated
Mar 19, 2025
Vendor
DrayTek
Product
Vigor3900
Classifications
CWE-94, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 30, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 19, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.5..1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

DrayTek · Vigor3900version=1.5..1.3

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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